I definitely could see it being between 60-80 million dollar budget. That's still the most money given to a director for any predator film.
Predator :18 million
Predator 2: 35 million
Predators: 40 million
As you can see however, a huge budget doesn't alway equate to a great movie. There are a huge number of factors that go into a great film such as the quality of the script, actors and story. From the little tidbits I've gleamed from different sources it sounds like many of us fans will be disappointed with the story. You could have a 400 million dollar budget if the story sucks it's going to bomb!